51575473 has 2 divisors, whose sum is σ = 51575474. Its totient is φ = 51575472.

The previous prime is 51575471. The next prime is 51575479. The reversal of 51575473 is 37457515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49801249 + 1774224 = 7057^2 + 1332^2 .

It is a cyclic number.

It is not a de Polignac number, because 51575473 - 2¹ = 51575471 is a prime.

Together with 51575471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51575471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25787736 + 25787737.

It is an arithmetic number, because the mean of its divisors is an integer number (25787737).

Almost surely, 2^51575473 is an apocalyptic number.

It is an amenable number.

51575473 is a deficient number, since it is larger than the sum of its proper divisors (1).

51575473 is an equidigital number, since it uses as much as digits as its factorization.

51575473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73500, while the sum is 37.

The square root of 51575473 is about 7181.6065751334. The cubic root of 51575473 is about 372.2326006099.

The spelling of 51575473 in words is "fifty-one million, five hundred seventy-five thousand, four hundred seventy-three".